Depends on the aircraft type and equipment fit if its capable of autoland.
And unless the wx is on the deck its normal to do manual landings anyway. The lowest I can go with the autopilot in is 200ft agl but normaly I will fly the intercept as well because the flight director takes more effort making sure its doing what you want than hand flying it.
As to what micro****e does on its approaches I don't know.
Proberly you would be better in the computer forum.
MJ